jsp 输入界面: 1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 ...
jsp 输入界面:
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Servlet计算器</title> 8 </head> 9 <body bgcolor="#afb4db">10 <%11 String s1 = "";12 Object ob = session.getAttribute("jg");13 if(ob != null){14 s1 = ob.toString();15 }16 session.invalidate();17 %>18 <form action="TestJSQ" method="post">19 <table border="1" align="center">20 <tr align="center"><td colspan="4">简易计算器</td></tr>21 <tr>22 <td colspan="4"><textarea name="text" id="tt" cols="22" rows="1"><%= s1 %></textarea></td></tr>23 <tr align="center">24 <td width="40" align="center"><input type="reset" value="C" style="width: 40px;"></td> 25 <td width="40"><input type="button" value="off" onclick="doselect(this)"></td>26 <td width="40"><input type="button" value="+" onclick="doselect(this)" style="width: 40px;"></td>27 <td width="40"><input type="button" value="←" onclick="doselect(this)" style="width: 40px;"></td></tr> 28 <tr align="center">29 <td><input type="button" value="7" onclick="doselect(this)"></td> 30 <td><input type="button" value="8" onclick="doselect(this)"></td>31 <td><input type="button" value="9" onclick="doselect(this)"></td>32 <td><input type="button" value="-" onclick="doselect(this)" style="width: 40px;"></td></tr> 33 <tr align="center">34 <td><input type="button" value="4" onclick="doselect(this)"></td> 35 <td><input type="button" value="5" onclick="doselect(this)"></td>36 <td><input type="button" value="6" onclick="doselect(this)"></td>37 <td><input type="button" value="x" onclick="doselect(this)" style="width: 40px;"></td></tr>38 <tr align="center">39 <td><input type="button" value="1" onclick="doselect(this)"></td> 40 <td><input type="button" value="2" onclick="doselect(this)"></td>41 <td><input type="button" value="3" onclick="doselect(this)"></td>42 <td><input type="button" value="/" onclick="doselect(this)" style="width: 40px;"></td></tr>43 <tr align="center">44 <td><input type="button" value="." onclick="doselect(this)"></td> 45 <td><input type="button" value="0" onclick="doselect(this)"></td>46 <td><input type="submit" value="=" onclick="doselect(this)"></td>47 <td><input type="button" value="%" onclick="doselect(this)" style="width: 40px;"></td></tr>48 <tr align="center"><td colspan="4">说明:除数为0时,结果=<br>-9.99999999E8即表示报错</td></tr> 49 </table>50 </form>51 <%52 53 %>54 </body>55 </html>56 <script language="javascript">57 58 function doselect(bt){ 59 var obj = document.getElementById('tt'); 60 var s = bt.value;61 obj.innerHTML += s;62 if(s == "←"){63 var a = obj.value;64 s = a.substring(0, a.length-2);65 obj.innerHTML = s; 66 }67 if(s == "off"){68 window.close();69 }70 }71 </script>
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原标题:Servlet简单计算器 2.0
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